Stones/Gems with E

• emerald

  A classic green gemstone; totally fits.

• Ekanite

  A real rare gemstone mineral. Valid!

• Emeralds

  Plural is fine; real gemstones indeed.

• euclase

  Yes, euclase is a known gemstone mineral.

• Elbaite

  Tourmaline variety, lithium-rich gemstone

• Ethiopian opal

  Precious opal from Ethiopia, bright play of color

• Epidote

  Green calcium-iron silicate mineral, a real gem

• Enstatite

  Magnesium silicate mineral, used as gemstone

The words in the list Stones/Gems with E come from players of the word game City, Country, River.